Wireless Flash Sync Trigger Remote Control for Canon Camera (RF-603C)

Key Specifications/Special Features:

RF-603 is equipped with the auto-sensing transceiver technology that enables it to change automatically between transmitter and receiver modes
When a hot-shoe or other trigger is detected, it automatically switches to transmitter mode
With auto relay mode you can trigger a remote camera in sync with remote flash
Remote trigger the camera shutter and flash at the same time by one RF-603 kit

Features and specifications:
Flash synchronizing speed: Up to 1/320s (depends on camera/flash model
2.4GHz band/16 selectable operating frequencies for eliminating interference
Shutter release: Half-way focus and full-way press shutter
Shutter interface: 2.5mm socket
Studio light interface: Standard PC socket
Battery: 2 x AAA batteries (not included in the package)
Stand-by time: Up to 45 hours (AAA battery)
Dimensions: 37 x 30 x 81.5mm

Compatible flash models:
For Canon 580EX II/580EX/540EZ/520EZ/430EZ/430EX/420EX/420EZ/380EX

Package includes:
2 x trans-receivers
1 x 2.5 to C1/C3/N1/N2/N3 shutter cable
1 x user's manual